1) Examine the following three lines of R code. Write a comment above each (after the#) describing what each line is doing. Each comment should be maximum one line. You don't
need to rewrite the code in your answer booklet.
#
mang. df <- data. frame(read. csv("MangroveData10Nov2015.csv", header=T))
#
z. value <- (1.0 - mean(mang. df$height))/sd(mang. df$height)
#
boxplot(samp. df$height, method="jitter", col="grayS0", xlab="height")

Function name: poly parameters: int returns: int description: a polynomial of degree n with coefficients a0,a1,a2,a3, . . ,an is the function p(x) = a0+a1x+a2x2+a3 ∗ x3+ . . +an ∗ xn this function can be evaluated at different values of x. for example, if: p(x) = 1+2x+ x2, then p(2) = 1+2 ∗ 2+22 = 9. if p(x) = 1+x2+x4, then p(2) = 21 and p(3) = 91. write a function poly() that takes as input a list of coefficients a0, a1, a2, a3, . . , an of a polynomial p(x) and a value x. the function will return poly(x), which is the value of the polynomial when evaluated at x.